THE INTEREST OF THE SELECTION OF THE C-12 BEAM IN RELATION TO C-13 FOR CANCER RADIOTHERAPY

Heavy ions having interesting properties as Bragg's peak require an im portant energy in order to attain a deep tumor. At intermediate and re lativist energies, fragmentation reactions occur throughout their path and produce fragments lighter than the projectile. Consequently, the product fragments give a residual dose beyond the Bragg peak. For thes e reasons, the interesting ions in radiotherapy of cancer converge tow ard heavy - light ions (C - Ne). Moreover, for a better treatment safe ty, it is envisaged also to use beta((+)) transmitting radioactive ion beams. This allows to provide the picture of the really irradiated vo lume by using a positon camera. In this context, our works essentially is concentrated on production rates and cross sections calculations f or nucleus products in the fragmentation of ((12))C at 95 MeV/u and (( 13))C at 75 MeV/u.